Invention Application
- Patent Title: METHOD AND APPARATUS FOR A DRAM CACHE TAG PREFETCHER
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Application No.: US17219782Application Date: 2021-03-31
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Publication No.: US20220318151A1Publication Date: 2022-10-06
- Inventor: Jagadish B. Kotra , Marko Scrbak , Matthew Raymond Poremba
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Santa Clara
- Main IPC: G06F12/0891
- IPC: G06F12/0891 ; G06F12/0853 ; G06F12/0862 ; G06F3/06

Abstract:
Devices and methods for cache prefetching are provided. A device is provided which comprises memory and a processor. The memory comprises a DRAM cache, a cache dedicated to the processor and one or more intermediate caches between the dedicated cache and the DRAM cache. The processor is configured to issue prefetch requests to prefetch data, issue data access requests to fetch the data and when one or more previously issued prefetch requests are determined to be inaccurate, issue a prefetch request to prefetch a tag, corresponding to the memory address of requested data in the DRAM cache. A tag look-up is performed at the DRAM cache without performing tag look-ups at the dedicated cache or the intermediate caches. The tag is prefetched from the DRAM cache without prefetching the requested data.
Public/Granted literature
- US11762777B2 Method and apparatus for a dram cache tag prefetcher Public/Granted day:2023-09-19
Information query
IPC分类: